Question

Question 3
Perform the indicated operations and express as a trinomial: (x + 4)(x - 2) + 3x

Answer 1

The expression after performing the indicated operation written as trinomial is:

$x^2+5x-8$

Step-by-step explanation:

Given

(x + 4)(x - 2) + 3x

We have to multiply (x + 4)(x - 2) and then add 3x to it

So,

$(x + 4)(x - 2) + 3x\\=[x(x-2)+4(x-2)]+3x\\= (x^2-2x+4x-8)+3x\\=x^2+2x-8+3x$

Combining alike terms

$=x^2+2x+3x-8\\=x^2+5x-8$

The expression after performing the indicated operation written as trinomial is:

$x^2+5x-8$

Keywords: Polynomials, Expressions

Learn more about polynomials at:

• brainly.com/question/2150928
• brainly.com/question/2154850

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